The hot corino-like chemistry of four FUor-like protostars

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Volume 696 (April 2025)

A&A, 696 (2025) A18

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Table 4

Similar to Table 3, but for the southern disk of L1551 IRS 5 assuming a source size of 0.08".

Species	n_lines	E_up (K)	N (cm⁻²)	T_ex (K)	FWHM (km s⁻¹)	v_LSR (km s⁻¹)
COMs with free parameters

CH₃OH	8	56–746	$({3.99}_{- 0.24}^{+ 0.24}) \times 10^{17}$ $\left( {3.99_{ - 0.24}^{ + 0.24}} \right) \times {10^{17}}$	${193.90}_{- 11.20}^{+ 10.90}$ $193.90_{ - 11.20}^{ + 10.90}$	${2.23}_{- 0.09}^{+ 0.12}$ $2.23_{ - 0.09}^{ + 0.12}$	${2.81}_{- 0.04}^{+ 0.05}$ $2.81_{ - 0.04}^{ + 0.05}$
CH₃OCH₃	4	81	$({2.92}_{- 0.26}^{+ 0.35}) \times 10^{16}$ $\left( {2.92_{ - 0.26}^{ + 0.35}} \right) \times {10^{16}}$	${88.80}_{- 7.14}^{+ 10.30}$ $88.80_{ - 7.14}^{ + 10.30}$	${2.65}_{- 0.21}^{+ 0.21}$ $2.65_{ - 0.21}^{ + 0.21}$	${3.45}_{- 0.07}^{+ 0.06}$ $3.45_{ - 0.07}^{ + 0.06}$
CH₃OCHO	15	106–312	$({5.00}_{- 0.62}^{+ 0.57}) \times 10^{16}$ $\left( {5.00_{ - 0.62}^{ + 0.57}} \right) \times {10^{16}}$	${200.25}_{- 12.15}^{+ 12.27}$ $200.25_{ - 12.15}^{ + 12.27}$	${1.79}_{- 0.18}^{+ 0.18}$ $1.79_{ - 0.18}^{ + 0.18}$	${3.52}_{- 0.11}^{+ 0.10}$ $3.52_{ - 0.11}^{ + 0.10}$
¹³CH₃CN	4	78-142	$({4.30}_{- 0.52}^{+ 0.69}) \times 10^{14}$ $\left( {4.30_{ - 0.52}^{ + 0.69}} \right) \times {10^{14}}$	${83.25}_{- 12.65}^{+ 29.88}$ $83.25_{ - 12.65}^{ + 29.88}$	${2.96}_{- 0.31}^{+ 0.27}$ $2.96_{ - 0.31}^{ + 0.27}$	${3.49}_{- 0.17}^{+ 0.16}$ $3.49_{ - 0.17}^{ + 0.16}$

COMs with T_ex = 193.9 K, FWHM = 2.23 km s⁻¹ and v_LSR = 3.47 km s⁻¹

CH₃OCH₃	4	81	$({6.86}_{- 0.36}^{+ 0.39}) \times 10^{16}$ $\left( {6.86_{ - 0.36}^{ + 0.39}} \right) \times {10^{16}}$
CH₃OCHO	15	106–312	$({5.58}_{- 0.21}^{+ 0.21}) \times 10^{16}$ $\left( {5.58_{ - 0.21}^{ + 0.21}} \right) \times {10^{16}}$
¹³CH₃CN	4	78–142	$({5.87}_{- 0.61}^{+ 0.61}) \times 10^{14}$ $\left( {5.87_{ - 0.61}^{ + 0.61}} \right) \times {10^{14}}$

Notes. In the case of a single value of E_up, when n_lines > 1 it means that those lines are all within 1 K of each other.

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